Update app.py

app.py

@@ -31,7 +31,10 @@ def convert_avif_to_png(avif_files):
 
 
 def zip_files(file_paths):
-    zip_path = "/tmp/converted_avif.zip"
+    if not file_paths:
+        gr.Error("No files to download. Please upload and convert AVIF files first.")
+        return
+    zip_path = "/tmp/converted_images.zip"
     with zipfile.ZipFile(zip_path, 'w') as zipf:
         for file_path in file_paths:
             if os.path.isfile(file_path):
@@ -80,13 +83,5 @@ with gr.Blocks(css=css) as demo:
         fn=handle_download,
         inputs=[],
         outputs=[gr.File()]
-    ).success(
-        lambda: gr.Info("Download started."),
-        inputs=None,
-        outputs=None
-    ).error(
-        lambda e: gr.Error(str(e)),
-        inputs=None,
-        outputs=None
     )
 demo.queue().launch()